Drier cylinder



2 Sheets-Sheet 1 P. M. F. BUETTNER DRIER CYLINDER Filed July 5, 1932 i O mMU July 16, 1935.

- & w s U y 0 H I I INVENTOR.

ATTORNEYS.

Patented July 16, 1935 T D TATES ros n PATIENTYLJOFFICE,

DRIER CYLINDER f ram M. F. Buettner, Oakland, an: Application July5, 1932, Serial No. 6203M l6 Claims.

"This invention is a drier cylinder which is especially adapted to the usual calendars or driers as at present form standardequipment in public laundries and paper plantsand similarinstitutions, although it is also adaptable for use in the smaller sizes 'of drier cylinders.

{Considerable diflic-ulty is encountered in the present types of steam heated drier cylinders, to

obtain uniform heat throughout the roll or cyl- 3 inder. i

The drier cylinder which is the subjectof this application is designed for the specific purpose of obtaining uniform heat throughout the length and periphery of the cylinder and also provides a distributionsystem within the roll for carrying. the steam to various portions of the roll;

The main object of the invention, therefore,v is to provide a drier cylinder with means for providing a complete circulation of steam so as to obtain uniform heating. throughout the entire periphery ofthe' roll. i 7 Another object of the invention is to provide a; distribution system within the cylinder for distributing the steam directly tothe innenperiphcry of the cylinder andqat different points.

throughoutthe length and periphery thereof.

A. furtherobject of the invention is to provide the meansas outlined with means for centering" the distribution meanswithin' the cylinder, this" means being adjustable from withoutthe cylinder..-

Cther objects and advantages of the invention will become apparent as the following descripthis specification and in which similar reference characters are used to designatesimilar parts throughout the several views, of which:

Fig. l is, a sectional elevation through the cyl-- inder with part of the steam distributing means shown in section.

Fig. 2' is an .end view of one oifthe equalizing shoes.

Fig. 3 is an end elevation of the invention showing a portion broken away to show the centering means for the steam distributor.

Fig. 4 is an enlarged end view of one of the centering devices.

Fig. 5 is a side view ofFig. 4 with one of the guide rods removed soas to show the adjusting The invention consists of a drier cylinder I 0 provided with removable heads I l and I2 which hollow trunnion l4 and the head jl'2 is provided (c1. a e-4 v p with a solid trunnion l5, whereby the cylinderis rotatably mounted'for operation.

"Mounted within the cylinder [0 is a drum l6 havingheads IT and it which are suitably secured to the drum l6. Adjacent to trunnion M a '5 concentric collar I9 is provided into which the steam is directed fro-m the trunnion M. This collar may be of any suitable length and may extend substantially to the head or may be spaced therefrom. Where the collar extends forwardly, it is necessary to provide a slot to clear the water discharge pipe 29 which passes-through the trunnion" l4 and through which the water-oi condens'ation is removed.-- However, it is preferable to make the collar '19 sufiiciently short so as not to interfere with the pipe 28 so that the pipe 20 ill ay be retained in a verticalposition so astohaVe the lower end always submergedin the water of a condensation, in which event the collar would be of alength extending substantially to the pipe 20.

- The interior of'drum I6 is entirely closed to the interior of the cylinder and'has a connection'ZI communicating to the exterior of the drum,- this ttnneeuon' being preferably formed of flexible pipe or hose and is intended for the purpose of equalizing theairpressure within the drum.

-Diagonally extending from the head 18 of the drum, within the area defined by the collar I9, are a plurality of tubes 22 which terminate in the periphery of the drum It? as is indicated at 23 and .30 whichare intended toreceive the steam through the collar H and direct this steam to different points along the cylinder It. It will be observed that the tubes 22 are of diiierent lengths. although they all diverge from the vicinity of the collar 19'. 5 v

The centering means for" the drum consists of a plurality of adjustable members, each of which consistsof a shoe 24 which has fixedly secured thereto a pair of guides 25, which guides are slidable' in bearings formed in brackets 26 and?! which are suitably secured to the head I1. Mounted in th'e'periph'ery of the shoes 24area plurality of:- auxiliary shoes 28 which are urgedoutwardlyby springs 29; these auxiliary shoes being suitably retained onthe main shoes 24 in such manner'as to permit resilient action against the'inte'rior of the cylinder.

. Fix 'edly mounted in the shoe 24 is a screw 30 V which: cooperates with 'a nut 3| which is retained 50 betweenthe brackets 26 and 21 and preferably. provided with journals rotatable in suitable bearing. bores in the brackets 26 and 21, this nut being provided'with. an internal thread for cooperation with bevel gear teeth 32 'forminga bevel pinion for cooperation with a bevel gear 33, which is rotatably mounted onthe head I! and guided [by means of rollers 34, which rollers are rotatably mounted on studs 35 so as to permit free action of this bevel gear. .This bevel gear is alsoprovided with internal gear teeth 35 with which a spur pinion 3'! cooperates for adjustment. A groove 3%.; is formed in the back of the bevel gear 33 for cooperation with the rollers 34. i

A plurality of these units are provided at each end-of the drum, and are equally spaced and operate in unison. The pinions 3'! are mounted on a shaft 39, which extends throughout the length of the drum, and hasa projecting wrench end flll,

which is accessible through a hand hole 4| formed in the head 1!, which hand hole is normally closed by the usual means.

' Inassembling the device, it is merely necessary to adjustthe shoes 24 back sufliciently to permit insertion in the roll 19, following which, the shaft 39 is rotated in the proper direction by means of. a wrench applied on the end 4!}, through thehand hole M. The shoes 28 thus all come into contact simultaneously and as the shoe 24 is adjusted further out, the springs'ZB are compressed, and these springs readily take up any variations in the diameters of the shells thus compensating for expansion and contraction. A suitable spac ing device is provided, the same consisting of brackets 62 and 45, one secured to one end of the core and the other secured to the adjacent end of the cylinder but eccentrically positioned with the first bracket, and a link connecting said brackets permits rotation of the drum relative to the cylinder, and-yet retains the end of the drum in fixedrelation to the head. [2. The connection 2 l between the outer air and the drum prevents rupture ofthe inner drum byexpansion of gases, which might be entrapped therein or the possibility of creation of v acuum therein as this drum is entirely sealed out of communication with the interior of cylinder ID. a

The steam for heating ably clear the pipe 28, so as to permit the cylinder it] and drum it to rotate independently of this pipe, so that thepipe may be retained in avertically downward. position. The steam after pass-- ing through the trunnion It, enters the pipes 22 at43, passing through these pipes into the space id-between the drum and the cylinder, thus directing the steam to various points about the the heat is provided by the device outlined and that a far more'satisfactory type of work can be produced in a cylinder built according to mymethod than by any other means .now'knowni It will be noted that positive centering of the; drum; can be obtained within the cylinder-and;

that this centering device is adaptedto compena satefor variations due to expansion or contraction, and that due to the number of contacting facesv provided, that positive driving of the drum 'in conjunction with the cylinder is provided.

Having described an operative device, it will be understoo'dfthat variations in. the construction" and arrangement of, parts which are consistent with the appended claims may be resorted to without. detracting from the spirit or scope of the:

the cylinder enter s throughthe trunnion l l, which trunnion prefer-- 'ably extends to a pointlwithin the head to suitinvention or sacrificing any of the advantages thereof:

I claim: 7 1. A drier cylinder provided with a hollow in ternal, axially disposed core, closed at its ends said core being internally in communication with the atmosphere to compensate for thermal expansion and contraction of the gases contained therein and being provided to restrict the steam space within the cylinder.

a removable head for each end thereof, a trun- -ni0n integral with one head and a journal intepansion and contraction compensating mounting means for .said corewithin said cylinder, an air passage between the interior of the core and' the exterior'of the cylinder to maintain atmospheric pressurewithin the core under variations in temperature, and, a plurality of' diagonal steam passages through the core. and extending from'one end adjacent the trunnionto different points about the periphery of the core to cause steam to angularly impinge on the inner surface of the cylinder and beldirected longitudinally thereof.

'3. A drier cylinder comprising a cylinder and a removable head for each end thereof, a trunnionl integral withone head and a-jou'rnal integral with theother head, a closed hollow core within said cylinder and forming a restricted steam space,

between the'c'ore and cylinder; expansion and contraction compensating mounting'means for said core within said cylinder, an air passage through the core and extending from one end adjacent the trunnion totdifferent points about V theperiphery oi the'core to cause steam to align larly impinge on the inner surface of the cylinder and be directed longitudinally thereoh 'said mounting means consisting of'a plurality'of sour angularly spaced, radially adjustabler'nembers mounted on each end of the core, and means for coincidently adjusting all of said members for' centering the core within the cylinder, each of saidmembers having a plurality of spring-urged -10 2. A drier cylinder comprising. azc'ylinder and auxiliary shoes to provide multi-point resilient" cooperation of eachmember with the surface of the cylinder. 7

4 A drier cylinder comprising a cylinder and a removable head'for. eachend thereof, a trunnion integral with one head and a journal integral with the other head, a closed hollow core Within said cylinder and forming a restricted steam space between the core and cylinder.

expansion and contraction compensating mount ing means'for said core within said cylindenan air passage between the interior of the coreand' the exterior of the cylinder to maintain atmospheric pressure within the core under variations in temperature, and, a plurality of diagonal steam" passages through the core and extending from said mounting means consisting of a plurality of equi-angularlyspaced, radially adjustable 'members mounted on each end of the core, and means for coincidently. adjusting all of said members for centering the core within thecylinden each of said members having a plurality of spring urgedauxiliary shoes to provide multipoint resilient cooperation of; each member with the surface of the cylinder, said members each consisting of a shoe, a pair of parallel guides for each shoe, a screw interposed between the guides and having one end fixed in the shoe, a rotatable threaded bevel pinion on said screw, and means for retaining said pinion against radial movementgsaid auxiliary shoes being mounted on the outer face of the shoe.

5. A drier cylinder comprising a cylinder and aremovable head for each end thereof, a trunnion integral with one head and ajournal integral with the other head, a closed hollow core within said cylinder and forming a restricted steam space between the core and cylinder, expansion and contraction compensating'mounting means for said core within said cylinder, an air passage between the interior of the core and the exterior of the cylinder to maintain atmospheric pressure within the core under variations in temperature, and, a plurality of diagonal steam passages through the core and extending from one end adjacent the trunnion to different points about the periphery of the core to cause steam to angularly impinge on the innersurface of the cylinder and be directed longitudinally thereof, said mounting means consisting of a plurality of equiangularly spaced, radially adjustable members auxiliary shoes being mounted on the outer face of the shoe, said means for coincidently adjusting all of said members consisting of a bevel gear rotatably mounted at each end of the core and concentrically therewith and meshing with all of the bevel pinions at its respective end of the core, an internal gear formed in each bevel gear, a spur pinion meshing with each internal gear, a shaft having said spur pinions fixed thereon, said shaft being rotatably mounted in the core and having a projecting wrench end. at one end accessible through a hand hole formed through the cylinder head. I

6. Mounting means for a core within a cylinder comprising; a plurality of equi-angularly spaced, radially adjustable members mounted on each end of the core, and means for coincidently adjusting all of said members for centering the core within the cylinder, each of said members having a plurality of spring urged auxiliary shoes to provide multi-point resilient cooperation of each member with the surface of the cylinder.

7. Mounting means for a core within a cylinder comprising; a plurality of equi-angularly spaced, radially adjustable members mounted on each end of the core, and means for coincidently adjusting all of said members for centering the core within the cylinder, each of said members having a plurality of spring urged auxiliary shoes to provide multi-point resilient cooperation of each member with the surface of the cylinder,

adjusting all ,of said members for centering the core within the cylinder, each of said members having a plurality of spring urged auxiliary shoes to provide multi-point resilient cooperation of each member with the surface of the cylinder, said members each consisting of a shoe,a pair of parallel guides for each shoe, a screw interposed between the guides and having oneend fixed in the shoe, a rotatable threaded bevel pin-1 ionon said screw, and means for retaining said pinion against radial movement, said auxiliary shoes being mounted'on theouter faceoi the shoe, said means for coincidentlyadjusting all of said members consisting of a bevel gear rotatably mounted at each end of the core and, concentrically therewith and meshing with all of the bevel pinions at its respective end of the core, an internal gear for-med in each bevel gear, a spur pinion meshing with each internal gear, a

shaft having said spur pinions fixed thereon, said shaft being rotatably mounted in the core and having a projecting wrench ,end atone end accessible through a hand hole formed through the cylinder head.

9. A drier comprising a cylinder having re'-' movable end wallsprovided with trunnions, a cylindrical core concentrically -'located within said-cylinder and provided'withnormally closed ends, said core having a plurality of diagonally disposed steam passages diverging from one end of the drum to the periphery thereof, adjustable means for removably supporting the core within the cylinder, means for venting said core, and means for introducing steaminto said steam passages.

10. A drier comprising a cylinder having removableend walls provided with trunnions, a cylindrical core concentrically located within said cylinder and provided with normally closed ends, an annular collaron one end of said core, means providing a plurality of divergent steam passages leading from the area encircled by said ing with the interior of the cylinder, a cylindrical core located within the cylinder, adjustable means for removably supporting the core within the cylinder, means providing a plurality of steam passages arranged in divergent relation with their inlet'ends in one end of the core adjacent said hollow trunnion, their outer ends being located at different distances along the periphery of the core, means for venting said core, and means for introducing steam into said passages through said hollow trunnion.

12. A drier comprising a cylinder having removable end walls provided with trunnions, a cylindrical core concentrically located within said cylinder and provided with normally closed'ends,

7 shoes relative tothe cylinder is effected by rcitative movement of the rings, and means for si-' means for heating the core, brackets secured to the ends of the core, screw shafts adjustably 'mounted in said brackets and each provided with a shoe constructed and arranged to bear against the interior of the'cylinder, adjusting rings rotativfely supported by said brackets, said rings having internal rack teeth there being one ring at each end of the core, said: rings and said screw shafts having complemental means so constructed and arranged that adjustment of all of the shoes relative to the cylinder is simultaneously efiected by rotative movements of said rings, and means normally engaging said rack teeth for simultaneously rotating said rings.

13. A drier comprising a cylinder ha'ving removable end walls provided with trunnions, a

cylindrical core concentrically located within saidcylindertand provided with normally closed ends, means for, heating the core, brackets secured'to the ends of the core, screw shafts adjustably mounted in said brackets and each provided with a shoe constructed and arranged'to bear against 1 the interior of the cylinder, auxiliary shoes yieldably engaging the first-mentioned shoes, guides secured to the first-mentioned shoes and slidably engaging saidbrackets, adjustable rings supported by said brackets, there being one ring at each end of the core,rsaidrings and said screw shafts having'complemental means so constructed and arranged that simultaneous adjustment oi all of the multaneously, rotating said rings.

14. A drier comprising a cylinder having removable end walls providedwith trunnions, a cylindrical coreconcentrically located within said. cylinder and provided withnormally closed ends,

means for heating the core, brackets secured to the ends of the core, screw shafts adjustably mounted in said brackets and each provided with a shoe constructed and arranged to-bear against the interior of. the cylinder, rollers carried by said brackets, adjustable rings, one at each end'of the core,rsaid ringseach having channels engaging said rollers in such manner as to'rotatively supr having peripheral teeth, screw shafts engaging said nuts, shoes secured to said screw shafts and so positioned as to bear against the interior of the drum, adjuster rings rotatively supported by'the brackets, there being one ring for each end of the core, said rings having teeth engaging said nuts in such manner that rotative adjustment of the rings will simultaneously effect adjustment of the shoes relative to the cylinder,

and means for simultaneously rotating said rings;

it. In a drier, a normally closedcylinder, a closed core removably supported within the cyl-' inder, a bracket secured to one end of the core, a

second bracket secured to an adjacent. end of 1 the cylinder hut eccentricallydisposed with re-' spect tothe first bracket, and alink' connecting said brackets in such manner as to maintain said end of the core in spaced rela'tionwith respect to said adjacent cylinder'end.

PAUL; M. F BUET'liNERI- 

